I'm the guy who ruins your UFC party by telling you that I know of a random Japanese guy who could beat the tattooed monster standing over his KO'd opponent. I'm the guy that watches events every week from the UFC, Pride, WEC, IFL, and EliteXC. I go online to watch Shooto and K1 Hero's fights on YouTube. I read multiple MMA blogs every day, since it's mainsteam sports news coverage (read: coverage by ESPN) is still in its infancy.
MMA shattered my love for the traditional sports by simply being better. It's faster, more explosive, and more technical (if you don't think so, you're not watching the right matches). A wise man once said that every sport is a combination of the two pure sports: running and fighting. Sometimes that fighting is in the form of swinging a club, throwing a rock, or pushing another guy past a line. But now we see fighting distilled to its essence, rather than disguised as something else. That's a big part of what makes me a fan.